100355QI

Overview

The Rochester Electronics 100355QI is a latch integrated circuit housed in a 28-PLCC package measuring 11.43x11.43 mm. It functions as a single-pole single-throw normally open switch array, providing four independent channels within a single component. The device is designed for surface mount installation and operates as a digital logic component. This specific part number represents an active product status manufactured by Rochester Electronics, LLC, serving as a lifecycle extension source for the original design.

Feature Summary

• Integrates four independent SPST-NO switching channels into a single compact IC
• Utilizes a 28-pin PLCC (J-Lead) surface mount package for board integration
• Functions as a digital latch with 100K speed classification

Applications

• Digital signal routing in embedded systems
• Multiplexing applications requiring multiple channel selection
• Logic level switching in industrial control interfaces

Procurement Notes

Verify the manufacturer designation as Rochester Electronics, LLC, which acts as a lifecycle extension provider rather than the original OEM. Confirm the package type is strictly 28-LCC (J-Lead) to ensure mechanical compatibility. Check that the product status is listed as Active. Ensure the functional description matches the SPST-NO x 4 configuration to avoid substitution errors with similar latch families.

Selection Notes

Select this component when a multi-channel analog or digital switching solution is required in a standard PLCC footprint. The four-channel architecture reduces board space compared to discrete switches. Verify voltage ratings against the system supply if not explicitly detailed in generic descriptions. Consider the J-Lead termination style for reflow soldering processes compatible with PLCC packages.

Part Context

Rochester Electronics specializes in manufacturing and archiving legacy semiconductor components. The 100355QI falls under their latch and switch category, providing availability for parts that may be discontinued by original manufacturers. This ensures continued production support for existing designs without requiring redesigns.

Replacement Considerations

Cross-reference with other 28-PLCC quad SPST switches from various manufacturers. Ensure pinout compatibility and logical function equivalence before substituting.